Update LSCOLORS to be more readable and consisten
Update LSCOLORS to be more readable and consisten

- Directories are bold, files are not.
- Directories/files with special flags get normal fg, gray bg.
- Don't use unreadable color combinations (with Solarized, anyway).

amarshall/dotfiles,amarshall/dotfiles,amarshall/dotfiles,amarshall/dotfiles